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META TOPICPARENT |
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Charmed Hybrid: pp -> Ψg η |
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Decay Modes
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- production at 15 GeV beam momentum: pp→ψgη
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- production at 15 GeV beam momentum: pp→ψgη
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- assume ψg mass m=4290MeV and width Γ=20MeV
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- Channel 1: Ψg -> χc1 (π0 π0)s-wave
- Χc1 -> J/Ψ γ
- J/Ψ -> e+ e- (50%), J/Ψ -> μ+ μ- (50%)
- π0, η -> γ γ
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- Channel 1: Ψg → χc1 (π0 π0)s-wave
- Χc1 → J/Ψ γ
- J/Ψ → e+ e- (50%), J/Ψ → μ+ μ- (50%)
- π0, η → γ γ
- Summary: pp → χc1 (π0 π0)s-wave η
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- D0* -> D0 π0
- D0 -> K- π+ π0
- π0, η -> γ γ
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- D0* → D0 π0
- D0 → K- π+ π0
- π0, η → γ γ
- Summary: pp → D0 D0*η
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Background Channels
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- Ψg -> χc0 (π0 π0)s-wave
- Ψg -> χc1 (π0 π0 π0)p-wave
- Ψg -> χc1 (π0 η)flat
- Ψg -> χc1 (η η)flat
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- pp → χc0 (π0 π0)s-wave η
- pp → χc1 (π0 π0 π0)p-wave η
- pp → χc1 (π0 η)flat η
- all χcJ decay radiatively
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- Ψg -> D0 D0* (π0 η)flat, same D-channels as signal channel
- Ψg -> D0 D0* (π0 π0)flat, same D-channels as signal channel
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- pp → D0 D0*η, same D-channels as signal channel
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- either 1 additional π0 in D0 decay
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- or 1 additional π0 in D0* decay
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- or 1 additional π0 in D0 decay of the D0* decay
- pp → D0 D0*π0, same D-channels as signal channel
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- each background channel with equal number of events as the signal channel
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